#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<string.h>
void leftRound(char* src, int time)
{
	int i, j, tmp;
	int len = strlen(src);
	time %= len; 
	for (i = 0; i < time; i++) 
	{
		tmp = src[0];
		for (j = 0; j < len - 1; j++) 
		{
			src[j] = src[j + 1];
		}
		src[j] = tmp;
	}
}


int main() {

	char str[] = "ABCD";
	leftRound(str, 1);
	printf("%s\n", str);

	return 0;
}